From:
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To:
Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc:
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>,Greg Stark <gsstark(at)mit(dot)edu>, Neil Conway <neilc(at)samurai(dot)com>,Alvaro Herrera <alvherre(at)surnet(dot)cl>, pgsql-hackers(at)postgresql(dot)org
Subject:
Re: NOLOGGING option, or ?
Date:
2005-06-01 15:55:46
Message-ID:
14606.1117641346@sss.pgh.pa.us (view raw or flat )
Thread:
2005-05-31 23:01:43 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 02:47:30 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 04:40:07 from Alvaro Herrera <alvherre(at)surnet(dot)cl>
2005-06-01 05:00:04 from Neil Conway <neilc(at)samurai(dot)com>
2005-06-01 08:21:39 from Greg Stark <gsstark(at)mit(dot)edu>
2005-06-01 08:44:24 from Greg Stark <gsstark(at)mit(dot)edu>
2005-06-01 12:03:25 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 13:39:07 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 13:58:53 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 14:12:18 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 14:18:25 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 15:21:07 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 15:55:46 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 17:55:46 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 18:10:45 from Alvaro Herrera <alvherre(at)surnet(dot)cl>
2005-06-01 18:24:39 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 20:17:39 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 18:14:27 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 20:33:24 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 22:05:13 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 22:32:32 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 22:47:17 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 23:02:17 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 22:37:51 from Hannu Krosing <hannu(at)tm(dot)ee>
2005-06-01 14:07:37 from Jochem van Dieten <jochemd(at)gmail(dot)com>
2005-06-01 14:14:42 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 15:43:24 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 16:00:28 from Jochem van Dieten <jochemd(at)gmail(dot)com>
2005-06-01 21:27:01 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 08:16:46 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 08:34:38 from Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>
2005-06-01 11:54:19 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 14:01:06 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 09:54:58 from Hannu Krosing <hannu(at)skype(dot)net>
2005-06-01 17:35:30 from "Alon Goldshuv" <agoldshuv(at)greenplum(dot)com>
2005-06-01 21:56:07 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 22:18:41 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-01 22:37:07 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-02 00:05:29 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-02 01:05:11 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-02 01:54:51 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-02 02:27:51 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-02 02:40:06 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-01 23:00:34 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 23:29:30 from "Alon Goldshuv" <agoldshuv(at)greenplum(dot)com>
2005-06-02 01:01:56 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-02 01:50:23 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-02 02:13:38 from Oliver Jowett <oliver(at)opencloud(dot)com>
2005-06-02 02:28:41 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-02 02:35:33 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-02 02:47:26 from Steve Atkins <steve(at)blighty(dot)com>
2005-06-02 03:35:57 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-02 05:16:34 from "Luke Lonergan" <llonergan(at)greenplum(dot)com>
2005-06-01 22:39:59 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 23:06:07 from Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
2005-06-01 23:06:09 from Joe Conway <mail(at)joeconway(dot)com>
2005-06-02 03:41:29 from Alvaro Herrera <alvherre(at)surnet(dot)cl>
2005-06-02 16:54:56 from "Alon Goldshuv" <agoldshuv(at)greenplum(dot)com>
2005-06-01 06:25:42 from Hans-Jürgen Schönig <postgres(at)cybertec(dot)at>
2005-06-01 14:43:44 from Dawid Kuroczko <qnex42(at)gmail(dot)com>
2005-06-01 12:10:55 from Hannu Krosing <hannu(at)skype(dot)net>
2005-06-01 15:31:31 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2005-06-01 16:18:09 from Hannu Krosing <hannu(at)tm(dot)ee>
2005-06-01 17:00:28 from Simon Riggs <simon(at)2ndquadrant(dot)com>
2005-06-01 17:18:55 from Alvaro Herrera <alvherre(at)surnet(dot)cl>
2005-06-01 17:35:25 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Lists:
pgsql-hackers
Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> 4. Optionally, we set a flag on the table showing the whole table is
> frozen. Anybody writing to this table subsequently will spoil this flag.
> If the flag is set, all forms of VACUUM will return success immediately
> without performing a scan (since it is already in a perfect VACUUM FULL
> and VACUUM FREEZE state).
This bit strikes me as dangerous and not related to the original
proposal. I don't care for the load-already-frozen-data part at all,
either. That's not just giving up WAL protection, that's an outright
MVCC semantics violation, in return for which we get ... not much.
Certainly not any speedup in the LOAD itself.
regards, tom lane
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